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Wastewater Pumps
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Taking care of your wastewater
Industrial wastewater isn’t one-size-fits-all, and neither are the pumps that move it. Whether you’re designing a new plant or keeping existing systems running, you need wastewater pumps that handle the job efficiently—without clogging, failing, or slowing production.
We supply a diverse range of industrial wastewater pumps and stirrers designed to tackle everything from light process water to thick sludge and fibrous waste. With options including submersible and surface-mounted pumps, cutters, and stirrers, we’ll help you find the right fit for your plant.
Tailored pumping solutions
Our Industrial Team are industry-trained and offer in-depth knowledge of industrial pumps and systems. Choose from our extensive range of:
- Self-Priming Centrifugal pumps – High-flow solutions for process wastewater transfer.
- Diaphragm pumps – For abrasive or chemically aggressive wastewater.
- Submersible pumps – For wastewater pits, sumps, and direct tank installations.
- Progressive cavity pumps – Easily convey thick sludge and viscous waste.
- Stirrers – Keep solids in suspension.
Genuine parts & sound advice
We supply genuine parts for the pump brands we carry, with stock of common wear parts held locally in New Zealand. Our dedicated Industrial team works closely with supply partners to ensure we provide the right parts and expert advice.
- Genuine parts for reliability and performance
- Stock held in NZ for fast delivery
- Maintenance advice tailored to your needs
- Servicing on request to keep your equipment running smoothly
We’re committed to keeping your pumps in top condition.
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Overview of our Wastewater Pumps
Ideal for handling tough wastewater applications with high dry solids content, ensuring reliable and robust performance.
- Power: 1.5 to 18.5 kW
- Long service intervals
- Heavy-duty construction
- Strong, user-friendly mounting brackets
LJM stirrers are designed for optimal wastewater treatment, preventing sedimentation and ensuring efficient media movement.
- Power: 1.5 to 18.5kW
- Self-cleaning propeller
- Low energy consumption
- Heavy-duty cast structures
Caffini pumps designed for high flow, low pressure situations where transfer of thick slurries is required.
- Size: 50mm - 152mm
- Max Flow: 830L/min
- Max Head: 15m
- Max Solids: 60mm
Caffini pumps designed for high flow, low pressure situations where transfer of thick slurries is required.
- Size: 50mm - 102mm
- Max flow: 520L/min
- Max head: 15m
- Max Solids: 60mm
Wangen produces an extensive range of hopper feed pumps for slurries and pastes with high solids content (KL-R Series) and dewatered sludge (KL-RU, KL-RQ, KL-RS and KL-R Triplex models).
- Max flow: 560m3/hr
- Max pressure: 48 bar
- Max solids: 45%
- For extremely dry or lumpy material
- Max flow: 102m³/hr
- Max pressure: 6 Bar
- Max Dry Solids: 8%
- Compact and designed for hard to access locations
Corrosion-resistant, durable submersibles used to transfer clean or slightly contaminated water up to 40 degrees.
- Size: 50mm – 76mm (2”-3”)
- Max flow: 11L/s
- Max head: 20m
- Max solids: 40mm
Wangen's KL-S, KB-S and KB22S self-priming progressive cavity pumps convey high viscous media up to 200,000 mPA-s, with or without solids. The KB22S is designed specifically for dosing.
- Max Flow: 560 m3/hr
- Max Pressure: 48 bar
- Materials: S/steel, cast iron
The Hyline Series by Wangen features flexible and maintenance-free joints, and sedimentation-free design. Convey or dose food and beverages, cosmetics and pharmaceuticals.
- Max flow: 7m3/hr
- Max pressure: 20 bar
- Max solids: 26mm
The AM Series bronze, self-priming centrifugal pumps have a double volute body. Use for bilge, deckwash, fire prevention or ballast.
- Max flow: 100m3/hr
- Max head: 79m
Varisco J-Series pumps suit applications that require fast priming from demanding suction heights, and the ability to manage polluted waste and abrasive fluids with suspended solids.
- Max flow: 1200m3/hr
- Max head: 110m
- Max solids: 76mm
- Self-priming: up to 7.5m
SolidsPro submersible mixers keep solids suspended in wastewater or effluent slurries for pumping, treatment or storage.
- Speed: 750-1,450rpm
- Power: 0.6-5.3kW
- Reaction thrust: 78-830N
- Propeller diameter: 128-400mm
- Materials: cast iron with 316 stainless steel propeller
Engineered to resist clogging SolidsPro submersibles feature recessed impellers with large free passage. Ideal for pumping large volumes of waste fluids with solids or particles.
- Max flow: 103m3/hr
- Max head: 20m
- Max solids: 80mm
- Double mechanical seal in oil bath
Wangen KL-T Series Progressive Cavity Immersion pumps safely convey media from tanks and pools with high metering accuracy even at low rpm.
- Max Flow: 102m3/hr
- Max Pressure: 6 bar
- Max viscosity: 200,000 mPA-s
- Max Dry Solids: 16%
Prime Fluid Management supplies genuine parts for our pump brands, holding stock of common wear parts in New Zealand.
- Genuine parts
- Stock held in NZ
- Maintenance advice
- Servicing on request
Portable solids-handling pumps for rapid deployment in demanding slurry and wastewater jobs.
- Discharge sizes: 50-80mm
- Max flow: 24.6L/s
- Max head: 17.7m
- Double mechanical seals
Dry or submerged pumps for wastewater jobs needing clean installs, cooling, and easy access.
- Discharge sizes: up to 700mm
- Max flow: 3,000L/s
- Max head: 90m
- Closed-loop cooling
Dry-installed pumps for plant or station use with flexible horizontal or vertical mounting options.
- Discharge sizes: 32-700mm
- Max flow: 3,000L/s
- Max head: 90m
- Horizontal or vertical mounting
Self-cleaning sump solution for wastewater stations and shafts with floating and settled solids.
- Discharge sizes: 50-200mm
- Max flow: 180L/s
- Max head: 60m
- Automatic clog detection
External tank mixing for sludge tanks and digesters, tailored with no in-tank moving parts.
- Discharge sizes: 100-300mm
- Max flow: 300L/s
- Max head: 11m
- Multiple configurations
Air-operated double diaphragm (AODD) pumps handle challenging fluids with air-powered operation. Choose for chemicals, viscous liquids, solids and shear-sensitive products. Self-priming, dry-running, and easy to maintain.
- Max flow: 1,136L/min
- Max pressure: 8bar
- Max solids: 46mm
- Stainless steel | Aluminium | PP | PVDF | PTFE
Electric Double Diaphragm (EODD) pumps combine diaphragm versatility with lower energy use and greater process control. Suit chemical handling, dosing and automated operations.
- Max flow: 454L/min
- Max pressure: 7bar
- Aluminium | Stainless steel | PP | PVDF
Submersible wastewater and sewage pumps use channel, vortex and cutter impellers to handle solids and fibrous material across industrial duties.
- Max flow: 6,600m³/hr
- Max head: 70m
- Max solids handling: up to 100mm
- Materials: cast iron
Tsurumi aerators provide oxygen transfer and circulation to support solids suspension and biological treatment in wastewater and process water.
- Max air flow rate: 528m3/hr
- Max water depth: up to 6m
- Power: 0.75-40kW
- Air inlet bore: 25-150mm
Questions? Specs? Talk to one of our Industrial Specialists today.
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In the field
Here are some examples of our solutions being used.
They brought their mechanics, they didn't just dump it and leave….couldn't have done it without them to be honest
This sort of unique system you set up is what sets you apart from others in the Market
I had an amazing experience with Prime Pump at the Transmission Gully ... will recommend you guys anytime and anywhere.
You guys had our backs from the get-go and stood beside us and persevered.
We called for a different type of solution…... We were pretty happy with what's been delivered
Prime supplied us with the best solution for hire and the instant availability was what we needed… We certainly will be using them in the future
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FAQ
At Prime Fluid Management, we understand that every fluid management challenge brings unique considerations. Here, you’ll find clear, practical answers and expert guidance to help you maximise uptime, achieve regulatory compliance, extend equipment life, and implement the most effective solution for your site.
It depends on the fluid, temperature, viscosity, and how the tank and pipework are laid out. A flooded suction setup is usually the most stable option for consistent performance, especially with higher viscosity oils, because the pump is always supplied with product.
If the pump needs to draw from a lower level or from a longer suction line, suction lift and self priming capability become important. However, the setup needs to be sized correctly to avoid issues like poor priming, air ingress, or cavitation. If you share your suction conditions and duty point, we can recommend a pump type and configuration that suits the installation.
For fuel and oil applications, reliability often comes down to protecting the pump from pressure spikes and contamination, and selecting the right sealing arrangement. Depending on the pump type and duty, options can include an internal relief or bypass valve to protect against dead heading, and an inline suction strainer to reduce the risk of damage from debris.
Seal selection also matters for demanding services, with configurations such as double mechanical seals used on certain duties where additional containment or reliability is required. We can guide you on what features make sense based on the product, operating conditions, and site requirements.
To specify the right fuel transfer pump for a New Zealand site, we typically need the fuel type, required flow rate, temperature, and viscosity, along with suction conditions such as flooded suction or suction lift.
Once we have those details, we can confirm the most suitable pump type and configuration for your application – including options for heavier fuels where viscosity is higher.